5
MEMORIES AND FILES HANDLED BY CPU MODULE
5.2 High Performance Model QCPU, Process CPU and Redundant CPU
5.2.8 Execution of standard ROM/memory card programs (boot run)
5
- 47
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication with
Intelligent Function
Module
8
Parameters
2) Standard ROM/memory card (ROM)
Even if online program change has been made to the program in the program
memory, the change is not updated to the program in the boot source standard
ROM/memory card (ROM).
Therefore, write the same file as the one written to the program memory to the
standard ROM/memory card (ROM) by performing the write to PLC (Flash
ROM). ( Section 5.2.6)
(c) Maximum number of boot files that can be set
The maximum number of boot files that can be set in the boot file setting of the
PLC parameter dialog box should be the same as the number of files that can be
stored into the program memory.
However, in the following cases, the number of boot files decreases by 1 for each.
• When a heading is set
• When the PLC parameters (set in the boot file setting) stored in the standard
ROM/memory card are booted
(d) Boot run executed when ATA card is used
When boot run is executed in either of the following states, a maximum of 200ms
may be taken per 1k step (4k bytes) at a boot.
• When boot is executed from the ATA card
• When boot is executed from the standard ROM with the ATA card installed
(e) When program memory contents is changed at power OFF ON or reset
If the program memory contents is changed when the PLC is powered ON or reset
after a sequence program is written to the program memory, the possible cause is
boot run.
The BOOT LED on the front of the High Performance model QCPU, Process CPU
or Redundant CPU lights up during boot run.
Stop boot run, referring to "(3) Operation for stopping boot run" in this section.
(f) Capacity after boot from memory card
The size unit of the file stored in each memory differs between the memory card
and the program memory. ( Section 5.4.4)
Therefore, note that the file transferred from the memory card to the program
memory changes in memory capacity between before and after the transfer.
To Next Page
Loading...
